i recently purchased 4 of these monsters and it was love at first sight. i currently have only one hooked up to my previous amp that's pushing out a mere 500w RMS to the CVX which is rated at 750 rms.
even at 500 rms the single CVX pounded like crazy! this woofer absolutely LOVES the low notes. it literally shook my entire car, the doors were flexing, the steering wheel was shaking, the whole dash was shaking, the center console was shaking, and i could even see the windshield wipers shaking.
i always thought kicker was mainly for loudness, but the CVX managed to get loud and sound great at the same time

overall, i'm very pleased with this product. it met and exceeded my expectations. i highly recommend the CVX, you will not be disappointed.